Grease-gun.



B. ,B. PADDOGK.

GREASE GUN. APPLICATION FILED MAR. 4, 1914.

1,119,033, Patented Dec. 1,1914.

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' EDWIN E. PADDOCK, OF FARMINGTON, WASHINGTON.

GREASE-GU11.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application filed March 4, 1914. Serial No. 822,387.

.To all whom it may concern Be it. known that I, EDWIN E. PADnooK, a citizen of the United States, residing at Farmington, in the county of \Vhitman and State of Washington, have invented certain new and ,useful Improvements in Greaseforce the follower through the grease car-.

tridge.

Another object of the invention is to provide an improved type of casing in which the grease cartridge isplaced.

' ing shown in elevation; Fig. 2 is a sectional Another object of the invention is to provide a gun whichwill besnnple mcons truction but very durable and not llable to easily get out of order. I

Another object of the invention is to so construct the gun that the grease in the cartridge will not be liable to escape and thus cause the gun to becovered with grease, thussoiling the hands of the user.

This invention is illustrated in the accompanying drawings where1n' Figure 1 is-a longitudinal sectional view through the grease gun, certain elements 'beview taken along the line 2 2 of Fig. 1; Fig. '3 is a sectional ,viewtaken along the line 33 of Fig.1; Fig. 4-is a sectional View takenalong the lined-41 of Fig. .1; Fig. '5 is an end view of the grease gun.

The casing 10 has its forward end pbr tion 11 removably connected therewith by means of the threaded joint 12. This permits the forward end. portion of the casing to be removed so that the grease cartridge 13 may be easily placed in the casing. The head 14 of the forward end portion 11 is semiconical and, is providedwith a neck 15 with which the spout 16 is removably connected. The spout 16 whichisshown is simply 'a conventional form of spout and.

may be formed ofiany shape desired accordingto the uses to which the gun is to be put. In'the neck 15 there is provided a slot 17 mally move the follower which forms a valve seat in which the valve plate 18 is slidably mounted. This valve plate is providedwith a stem 19 which has its outer end'pivotally connected with the operating lever 20 so that by pressing the lever, the valve plate may bemoved to bring its opening 21 into and out of registry with the outlet opening 22 formed in the neck 15.

The head 23 at the rear end of the casing 10 is provided with a central opening from which there extends an inwardly extending sleeve 24 which forms a bearing for the plunger 25 and carries resilient strips 26, the purpose of which will be hereinafter brought out. This plunger 25v leads from a hood 27 which incloses the sleeve 21 and is provided with a flange 28 at its free end. A spiral spring 29 is placed about the hood 27 and has one end bearing against the flange 28 and its opposite end bearing against the follower 30, which fits into the grease cartridge 13. It will thus be seen that the spring 29 will nor- 30 through the cartridge and expel the T grease through the spout 16'- when the valve plate 18 is moved to an open position.

When this device is in use, the grease cartridge 13 is placed in the casing and the removable end portion 11 of the casing is screwed ,into place. The head 14 will engage the end of the cartridge 13 and will inove the same toward the rear endof the casing to the position shown in Fig. 1 so that the follower 30 will enter the cartridge andthe spring 29- will. be compressed a suflilower 30. An auxiliary plunger 31 will then" be placed against the end ofthe plunger 25 with the rib 32 fitting in the groove 33 of the plunger 31 and the plunger 31 will be moved into the sleex e or hearing 21 a suflicient distance to move the plunger 25 inwardly and permit the plunger 31 to take its place with the spring gripping strips 26 fitting into the notches 34f The sprin will now be underpressure again and will force the follower 30 through the cartridge 13. The plunger 31 is provided with a rib 35 which corresponds to the rib 32 so that as many auxiliary plungers may be used as necessary according to the size of the grease gun. After the grease has been all expelled from the cartridge, the plunger 31 is turned one-fourth of a turn to move the spring strips 26 out of the notches 34: and the spring 29 will ,then move the hood 2'? toward the head 23 thus forcing the plunger 31 out of the sleeve 2 L The plunger 25 will then be in its normal position shown in Fig. 1. The groove 33 and ribs 32 and 35 not only permit the plungers 25 and 31 to be turned in order to release the plunger 31 from the spring strips 26 but also prevent the plungers from moving transversely of each other. This prevents any danger of the plungers slipping out of alinement when the plunger 31 is in place. It should be noted that the. grease cartridge 13 may be filled by the user of the gun or may be sold by the manufacturer as a container for the grease. This permits the grease to be sold as cheaply as is grease which is now put up in metal receptacles.

It will thus be seen that I have provided a grease gun in which a' grease cartridge may be easily placed, and in which the follower will be forced through the cartridge by a spring having one end bearing against an adjusted abutment hood.

What is claimed is:

1. A grease gun comprising a casing, a cartridge mounted in said casing, a follower fitting into the inner end of said cartridge,

1 a sleeve extending into said casing and inclosing an opening formed in the rear head of said casing, a hood inclosing said sleeve and having its free end portion formed into a flange, a spring surrounding said hood and having one end'bearing against said flange and the opposite end bearing against said follower, a'plunger leading from said hood through said sleeve, and means for moving said plunger inwardly and holding the same in an adjusted position whereby the tension of said spring may be regulated.

2. A grease gun comprising a casing, a cartridge mounted in said casing, a follower mounted in said cartridge, a hood mounted in said casing, a spring surrounding said hood and having one end bearing against said hood and the opposite end bearing against said follower, a plunger extending from said hood through an opening formed in the head of said casing, an auxiliary plunger removably connected with said firstmentioned plunger whereby said first-mentioned plunger may be moved inwardly, and means carried by said casing for releasably engaging said auxiliary plunger to hold said auxiliary plunger in a position to retain said first-mentioned plunger within said casing.

3. A grease gun com rising a casing, a follower mounted in sai casing, a sleeve extending from one end of said casing into the same and inclosing an opening formed in the end of the casing, a hood positioned in said casing and inclosing said sleeve, a plunger extending from said hood through said sleeve, resilient strips carriedby said sleeve and engaging saidplunger, a spring surrounding said hood and having its inward end engaging said follower, and an auxiliary plunger removably connected with the first-mentioned plunger and provided with side notches whereby said auxiliary plunger may be moved into said sleeve with said spring strips fitting into the side notches to releasably hold said auxiliary plunger in said sleeve and hold said firstmentioned plunger within said casing.

4. A grease gun comprising a casing, a follower mounted in said casing, a sleeve extending into said casing and inclosing an opening formed in the rear head of said casing, a hood inclosing said sleeve, a spring carried by said hood and bearin against said follower, a plunger leading rom said hood through said sleeve, and means for moving said plunger inwardly and holding the same in an adjusted position.

In testimony whereof I aflix my signature in presence of two Witnesses.

EDWIN n. PADDOCK.

W'itnesses:

FLOYD C. SOHLAUCH, W. W. RENFREW. 

